Deno’s Garden

Magnolia denudata

Genus Magnolia

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around October 7, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    1/5 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 90 days to germinate.

20% germination in 90 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Magnolia p. 175Public domain
Show the original text
Magnolia (Magnoliaceae). Seeds are enclosed in an oily red berry, and were WC with daily brief detergent washes. Germinations might have been improved if there had been exteneded detergent washes. Empty seed coats make seed counts inaccurate. Germination is epigeal and the cotyledons develop in 1-3 w after germination. Outdoor treatment killed the seeds and seeds of M. denudata germ. 70-40(1/5 in 10th w) and 40(1/5 in 3rd m)-70(1/5 on 11th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Magnolia p. 175. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around July 30, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 29, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 70 days to germinate.

20% germination in 70 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Magnolia p. 175Public domain
Show the original text
Magnolia (Magnoliaceae). Seeds are enclosed in an oily red berry, and were WC with daily brief detergent washes. Germinations might have been improved if there had been exteneded detergent washes. Empty seed coats make seed counts inaccurate. Germination is epigeal and the cotyledons develop in 1-3 w after germination. Outdoor treatment killed the seeds and seeds of M. denudata germ. 70-40(1/5 in 10th w) and 40(1/5 in 3rd m)-70(1/5 on 11th d).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Magnolia p. 175. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.